A comprehensive and authoritative review of the most important scientific and clinically relevant topics today in ligaments, tendons, and capsular biology, including their biomechanics and surgical reconstruction. The authors review the basic science of tendons in the hand and shoulder ligaments, the current clinical status of the shoulder and cruciate ligaments, and the latest advances in research on the healing of ligament and tendon to bone, artificial ligaments, and gene therapy. They also cover the major type 1 collagen soft tissues that are of particular interest to upper extremity surgeons and sports medicine specialists.